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Cell ID and antenna port configurations for EPDCCH

  • US 9,794,923 B2
  • Filed: 09/01/2015
  • Issued: 10/17/2017
  • Est. Priority Date: 08/10/2012
  • Status: Active Grant
First Claim
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1. A method of wireless communication, comprising:

  • mapping, at a first user equipment (UE), a receiver of the first UE to a set of antenna ports of a base station that are mapped to a second UE, such that the set of antenna ports are shared with the second UE, and a plurality of resource elements of the set of antenna ports are shared between the first UE and the second UE;

    configuring, at the first UE, the receiver to receive a first reference signal on a first set of resource elements of a first enhanced physical downlink control channel (EPDCCH) transmitted from the set of antenna ports, a second reference signal intended for the second UE transmitted on a second set of resource elements of a second EPDCCH from the set of antenna ports, the first set of resource elements and the second set of resource elements selected from the plurality of resource elements, and the first set of resource elements differing from the second set of resource elements;

    receiving, at the first UE from the base station, the first reference signal on the first set of resource elements of the first EPDCCH transmitted from the set of antenna ports;

    descrambling the received first reference signal based at least in part on a cell identification (ID) shared with the second UE; and

    demodulating a signal based at least in part on the descrambled first reference signal.

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